How stem cell therapy addresses erectile dysfunction through tissue regeneration, vascular repair, and nerve restoration. Clinical research, treatment process, and candidacy criteria.
Erectile function depends on vascular endothelial integrity and cavernous smooth muscle health. ED is primarily a vascular disease — endothelial dysfunction, reduced nitric oxide production, and cavernous fibrosis are the common final pathways whether the cause is diabetes, hypertension, post-prostatectomy nerve damage, or Peyronie's disease. MSC intracavernous injection directly targets these mechanisms: MSCs release VEGF (angiogenesis), eNOS-activating factors (nitric oxide restoration), anti-fibrotic factors, and neurotrophic factors that support cavernous nerve regeneration in post-surgical cases.
Published Phase I/II trials (Haahr et al. 2016, Yiou et al. 2016, Bahk et al. 2010) report IIEF-5 score improvements of 5–12 points in 60–70% of treated patients at 6 months — clinically meaningful improvements from severe/moderate ED categories to mild/no ED categories. Post-prostatectomy ED responds in 50–65% of cases; diabetic vasculogenic ED in 55–70%; Peyronie's disease in 40–55% (with plaque softening and curvature improvement as additional outcomes). Effects typically emerge at 4–8 weeks post-treatment and continue developing over 6 months.
The protocol involves 2–3 intracavernous injection sessions of 20–50 million WJ-MSCs combined with systemic IV delivery, administered over 3–5 days. Pre-treatment evaluation includes IIEF-5 questionnaire, penile Doppler ultrasound, hormonal panel (testosterone, prolactin), and vascular risk factor assessment. The procedure is day-case and does not require general anaesthesia. Post-treatment follow-up at 1, 3, and 6 months includes IIEF-5 reassessment and penile vascular ultrasound.
Related articles: Anti-Aging Cellular Rejuvenation (2026 Guide) | Understanding Stem Cell Therapy (2026 Complete Guide) | Exosome Therapy Benefits (2026 Research Update)
Related treatments: Erectile Dysfunction Stem Cell Therapy | Anti-Aging Stem Cell Therapy | Cellular Rejuvenation Therapy